Kaoru Ishikawa wanted to change the way people think about work. He urged managers to resist becoming content with merely improving a product's quality, insisting that quality improvement can always go one step further. His notion of company-wide quality control called for continued customer service. This meant that a customer would continue receiving service even after receiving the product. This service would extend across the company itself in all levels of management, and even beyond the company to the everyday lives of those involved. According to Ishikawa, quality improvement is a continuous process, and it can always be taken one step further.With his cause and effect diagram (also called the "Ishikawa" or "fishbone" diagram) this management leader made significant and specific advancements in quality improvement. With the use of this new diagram, the user can see all possible causes of a result, and hopefully find the root of process imperfections. By pinpointing root problems, this diagram provides quality improvement from the "bottom up." Dr. W. Edwards Deming --one of Isikawa's colleagues -- adopted this diagram and used it to teach Total Quality Control in Japan as early as World War II. Both Ishikawa and Deming use this diagram as one the first tools in the quality management process.
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